Reversing-switch.



T. B. ELLIOTT.

REVERSING SWITCH.

APPLICATION FILED APR.10, 1911.

1,084,077, Patented Jan. 13, 1914.

lmwntor A F I 1 w v ,D I I witnesses $4 .4 a; 4 L [al @LZ & Jim-muTHOMAS BURCHFIELD ELLIOTT, OF INDEPENDENCE, KANSAS.

REVERSING-S\YTTCH.

Specification of Letters Patent.

Patented Jan. 13.1914.

Application filed April 10, 1913 Serial No. 620,123.

To all whom it may concern:

Be it known that I, Tnoinvs Bnnonrnnio Ennio'i'r, a. citizen of theUnited States, residing in Independence, in the -eounty of Montgomery,State of Kansas, have invented a certain new and useful Improvement in.Revcrsing-Switches for llither Direct or Alternating Current Electric.Motors; and I do hereby declare that the following 1s a full, clear, andexact description of my invention, such as will enable others skilled inthe art to which it appertains to make and use the same.

My invention has reference especially to electric switches for thepurpose of reversing direct cin'rent motors, and also of reversingalternating current electric motors.

The object oft my invention is to provide a'switch by means of which itmay be possible to rovers. an electric motor which is on a. directcurrent as well as to reverse an electric motor which is on analternating' current, by reversing the switch, and to provide. thisreversing switch for electric niotors, especially, and in such form thatthe same can be easily covered with non-conducting material, except. theend of the lever which protrudes beyond the cover: this lever having onthe end thereof a. knob, which knob is insulated from the rest of the instrunient.

Figure 1 is a top plan view of my invention showing the reversing leveras it would be when the currentdisconncctcd from the 1noto-; alsoindicating; where the lever would be upon the left hand side when themotor is running in one direction, and the position 'where the leverwould be on the right hand side when the motor was driven in the otherdirection. Fig. 2 is a sectiona side view taken through the instrumenton a line drawn to the lett ol' the lever. hill. 3 is atop plan view ofmy invention showing the position of the lever when the motor is beingdriven in'one direction. Fig. 4 is a. top plan view of the same showingthe position ol' thelever when the. motor is being driven in theopposite direction.

lleterring to the drawings, 1()l't (lllb the base of the instrumentwhich is constructed out of non-eoiuluctine material.

represents the cover of the instrument which is lined with' insulatingmaterial and arranged to cover all coiulucting parts of the switsh.

0 represents the switch lever, (Z the knob on the lever. e the screwholding the lever 0 to the base a.

f is a. spring catch to hold the lever when placed.

9 is a. metal bar under which lever (I slide when adjusted from thecenter position to either side of the instrument.

7L1 and k are conducting bars, one being above the lever 0 and the otherbelow the lever 0; both of which bars are secured to the lover a. Leverc is of non-conducting material. The conducting bars are designed forthe purpose of contacting with several extendingconducting bars m m m mm, of, a3", and 00".

The binding; posts Z are for the current wires supplying the. power.

7c are binding; posts for wires to main winding on the motor.

j are. binding posts for wires to auxiliary windingon the motor. Indirect current motor the wires from run to the brushes and the wires"from is run to the fields, or vice versa.

The conducting bars :0, :0 m, m and of are placed in deprssions in thebase and are designed for contact with the metal bar it on the underside of lever The conducting bars 122?, 1217-, m, mi and m are forcontact with metal bar 7L2 on upper side of lever 0.

a a", a and n are wires or bars placed in depressions in the under sideof the base and connect opposite contact posts. The

conducting bars m", we. and m are placed on the left side of the lever cand secured to the base. in such a manner as to come in contact with themetal bar ]L2 on the top at lover when the lever cplaced in the lefthand position on the base. The metal bars .1 :r" and a are placed on theleft hand position of the lever and are secured to the base indepressions in the base that cause them to come in contact with themetal bar on the under side of the lever c.

The metal bars or and m are placed on the right hand position of thelever 0 and are secured to the base so as to come in contact with themetal bar if on the top side of lever c when the lever c is placed inthe right hand position and the metal bars :0 and 11: are placed on theright hand side and in depressions in the base that bring them incontact with the metal bar h on the under side of the lever 0 when thelever 0 is in the right hand posit-ion.

' ,the spring catch In operation my invention can be used to sto themotor and to start the motor in a di' erent direction. The motor may beeither an alternating or a direct current motor.

':When this lever 0 is placed in the center position, the lever c thenbeing without any electrical connection cuts off the current from themotor. That bar g under which the lever 0 moves is provided with lugsarranged in an are centered to the pivotal point of the lever c, saidlugs have rounded points which are adapted to lit in a hole in on thelever c and hold said lever in P01tl011 when placed in any one of thethree operative positions desired for said lever. The middle positionstops the motor; the right hand position starts the motor in onedirection; their by placing the lever hack to the middle position itstops the motor, then by placing the lever to the left hand position,starts the motor in the other direction. I understand that the same resuts might be obtained in part with a double pole double throw lrnifeswitch, but there is no covering for such a switch and it is not suitedfor places where the user is liable to come in contact with the currentwhile trying to throw the switch. The Wires n n WP and a are insulatedwires which pass beneath through the base and connect the metalcontacts.

When the lever c is in the center position the current comes in on thewire attached to the binding post Z and passes through the conductingbar 50 to the conducting bar h beneath the lever c, and since the leverc is made of non-conducting material the conducing bars k and h areinsulated from each other and there being no other electrical connectionthe current is cut off. However, if the lever c is shifted to the leftof its center position the current will pass from the lower conductingbar 72, to the conducting bars and a From the bar 0: that part of thecurrent will pass through the connecting wire a to the binding post j,and from there in the Wire P to one winding on the motor, then back fromthe motor to the bar m and through the connecting wire 12, to theconducting bar m and on through the bar b above the lever c to the barwe", and from there in the return. wire to its source. The other part ofthe current passes from the bar :0 through the connecting wire if off bypost is to the other winding on the motor; then back from the motor tothe conducting bar m and through the connecting wire 12, to theconducting bar m on the opposite side of the lever and through said baron through the top bar If to the bar m and off on the return wire to itssource. When the lever 0 is shifted to the right hand of its centerposition the current comes in on the i lower bar h as before and passesthrough the said bar to the bars as and mama bar m" that part of thecurrent passes through the w1re P to one wlndmg on the motor and returnsin the same direction as it did when the lever c was in contact on theleft hand side; but from the bar the other part of the current over thewire to the other winding of the motor and returns from the motor to thebar m, this being the direction just opposite to that in which thecurrent traveled when the lever 0 was in contact on the left hand side.From the bar we the current passes through the bar h and on through thebar m oil in the return Wire to its source.

The description of the directions of the current as given herein aresome of those which possible and practicable, yet not all that might beused, and any of the connections and descriptions of the current mightbe changed, and yet be within the principles of this invention as it canbe read 11y seen that by changing some parts of the instrument the wirescould be connected up difierently on the motor and would give the sameresults.

Having described my invention what I claim is:-

1. In an electric reversing switch, a nonccnducting base, a lever ofnon-conducting material secured to said base, two bars of conductingmaterial secured to opposite sides of said lever, bars of conductinmaterial secured to the base on opposite sides of said lever andarranged so that part of said bars contact with one of theconductingbars secured to the lever, and part contact with the otherconducting bar secured to the lever when said lever is shifted intoeither one-of its operative positions, wires connecting in pairs four ofsaid bars on one side of said lever with four of said bars on the otherside of said lever, and binding posts secured to said pairs of bars:

2. In an electric reversing switch, a nonconducting base, anon-conducting lever pivotally secured to said base, two conducting barssecured to opposite sides of said lever, a conducting bar secured to thebase and in contact with one of the conducting bars secured to thelever, a conducting bar secured to the base and in contact with theother conducting bar secured to the lever, four oppositely disposedconducting bars secured to the base on either side of said lever, wiresconnecting said bars in pairs and binding posts upon said bars.

3. In an electric reversing switch, a noncouducting base, anon-conducting lever pivthe lower conducting bar secured to the lever,four conducting bars secured to the base on theright hand side-of thelever, four conducting bars secured to the base on the left hand sideofthe lever, two of said bars on the right hand side and two of said barson the left hand side of said lever being above said lever, and two onthe righthand side and two on the left hand side being below said lever,wires connecting the four conducting bars on the right hand side withfour conducting bars on the left hand side;

, said connections being between one lower baron the right and one lowerbar on the left, and between one upper bar on the right and one upperbar. on the left; and also, between one upper bar on the right and onelower bar on the left, and between one lower bar-on the right and oneupper bar on the left and a binding post upon each pair of said bars.

4. In an electric reversin switch, a nonconducting base, a lever onon-conducting material pivotally secured to the base, a bar ofconducting material secured to the upper side of said lever, a bar ofconducting niaterial secured to the lower side of said le ver, aconducting bar secured to the base in. contact with the upper conductingbar on the lever, a conducting bar secured to the base in contact withthe lower conducting bar on the lever, four conducting bars secured tothe base on the right hand side of the lever, four conducting barssecured to the base on the left hand side of the lever, two of said barson each side being above and two below said lever, wires connecting thebars on the right hand side in pairs with the bars on the left handside, the connection of two pairs being between opposite upper and lowerbars and the connection of two" pairs being between bars on'the sameside of the lever, one pair being opposite upper, and one pair oppositelower bars and binding posts upon said bars.

THOMAS n'aaearirrn amour.

Witnesses:

D. A. CKIPPS,

EMMA Farms.

